Cold-pressed juices: You might have heard about the term 'cold-pressed juices' being thrown around these days in discussions on health and fitness. It is actually an alternate process of juicing fruits wherein they are mashed at first and then external pressure is applied to extract the juice. In this way, the enzymes inside the fruit remain intact. They are also great in alkalising the acid build up in the body to keep the pH level neutral. Some fruits have nutrients that naturally help the immunity system.